RU1827301C - Continuous strip rolling mill - Google Patents

Abstract

SUMMARY OF THE INVENTION: The inter-stand pairs of tension rollers are mounted with the possibility of not only vertical but also horizontal movement (along the rolling axis), which allows the angles of entry (or exit) of the strip to be stored in the rollers to change the tension, thereby stabilizing the rolling process. 1 ill.

Description

The invention relates to the processing of metals by pressure and can be used in the rolling of strips, mainly of thin tape.

The purpose of the invention is to stabilize the rolling process, expanding the technological capabilities of the mill.

The possibility and mechanism of horizontal movement of pairs of cross-brace tension rollers installed with the possibility of vertical movement and equipped with a movement mechanism allows you to get rid of the fixed dependence and set any angles of entry and exit of the strip from the deformation zone, you can always choose such angles at which specific tension across the strip thickness are constant. Thereby, the probability of strip breaks is reduced. The technological capabilities of the mill are expanding significantly. For example, it is possible to perform asymmetric rolling in each mill stand.

The invention is illustrated in the drawing.

Continuous rolling mill includes sequentially located stands 1 and

2 with working 3 and 4 and supporting 5 and 6 rolls. The support rolls are equipped with pressure devices 7 and 8. The tension rollers 9 are moved along the guide mechanism 10 11. The interstage tension rollers 10 with the mechanism of their vertical movement 11 are moved along the guide mechanism 12 of the movement 13. The movement mechanism may be, for example hydraulic. The device operates as follows. Using the pressure devices 3 and 8, the required initial clearance between the work rolls 5 and 6 is set. The strip is inserted into the mill and the tension rollers TO are moved by the mechanism 12 and the interstretched tension rollers by the mechanisms 11 and 12 set the necessary, the calculated entry and exit angles of the strip from the stand, providing a uniform distribution of specific stresses across the strip thickness. The strip is rolled. In case it is necessary to deflect the strip at the exit from stand t to the upper work roll, and at the entrance of stand 2 to the lower one, it is necessary to swap work rolls in one of the stands.

00

to VI s o

Using the invention, it will be possible to set the angles of the strip exit from the previous stand and the entrance to the subsequent stand independently of each other. An independent change in these angles makes it possible to obtain a uniform distribution of specific stresses over the thickness of the strip and, therefore, to prevent the probability of breaks with an increase in the average level of tension wives, and also stabilize the rolling process. The number of breaks is reduced to 0.6%. Increasing the average level of tension & lowers the lowering of rolling, codebing, thereby increasing the quality of your equipment. Ras0

5

the technological capabilities of the mill are expanding.

Claims (1)

SUMMARY OF THE INVENTION A continuous strip rolling mill comprising successively arranged rolling stands and installed between stands with the possibility of vertical movement of a pair of tension rolls, characterized in that, in order to stabilize the rolling process and thereby expand the technological capabilities of the mill, pairs of inter-stand rollers are installed with the possibility of horizontal movement and equipped with a mechanism for such movement. Mi r